| Q1CNI3 | HEM3_YERPN | Yersinia pestis bv. Antiqua (strain Nepal516) | hemC YPN_0114 YP516_0073 | Detail |
| Q491Z6 | HEM3_BLOPB | Blochmannia pennsylvanicus (strain BPEN) | hemC BPEN_601 | Detail |
| Q2KIN5 | HEM3_BOVIN | Bos taurus (Bovine) | HMBS | Detail |
| B8GXG1 | HEM3_CAUVN | Caulobacter vibrioides (strain NA1000 / CB15N) (Caulobacter crescentus) | hemC CCNA_00070 | Detail |
| Q8XZI7 | ISPT_RALSO | Ralstonia solanacearum (strain GMI1000) (Pseudomonas solanacearum) | uppS RSc1408 RS05284 | Detail |
| Q3AQF5 | HEM3_CHLCH | Chlorobium chlorochromatii (strain CaD3) | hemC Cag_1515 | Detail |
| B9E743 | HEM3_MACCJ | Macrococcus caseolyticus (strain JCSC5402) | hemC MCCL_1304 | Detail |
| B0TMW0 | SELU_SHEHH | Shewanella halifaxensis (strain HAW-EB4) | selU Shal_4158 | Detail |
| Q0HNW2 | SELU_SHESM | Shewanella sp. (strain MR-4) | selU Shewmr4_0174 | Detail |
| Q82WS2 | HEM3_NITEU | Nitrosomonas europaea (strain ATCC 19718 / CIP 103999 / KCTC 2705 / NBRC 14298) | hemC NE0590 | Detail |